TURNTABLE DEVICE

摘要

PROBLEM TO BE SOLVED: To obtain a turntable device which has a centering function to prevent the offcentering of a disk and has excellent dimensional accuracy with inexpensive means. SOLUTION: The turntable device for positioning the disk D having a central hole by exactly causing the self-aligning of the disk when rotatably supporting the disk within a drive comprises a turntable part 11 which supports the peripheral surface of the central hole of the disk D, a center ring part 12 which is fitted into the central hole of the disk D and a self-aligning part 15 which causes the self-aligning of the center of the disk D and the center of the center ring part 12. At least one of the turntable part 11, the center ring part 12 and the self-aligning part 15 is molded of a non-crystalline thermoplastic resin material having a glass transition temperature (Tg) of >=170 deg.C.